Consider the sulphides HgS, PbS, CuS, Sb2S3, As2S3 and CdS. Number of these sulphides soluble in 50% HNO3 is ___________.
Answer (integer)
4
Solution
Pbs, CuS, As<sub>2</sub>S<sub>3</sub>, CdS are soluble in 50% HNO<sub>3</sub>.
<br><br> HgS, Sb<sub>2</sub>S<sub>3</sub> are insoluble in 50% HNO<sub>3</sub><br><br>So, answer is 4.
About this question
Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family
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